you don't appear to have separate letters for them, do how would you write /dz/ and /ʑ/?

дз жь

may I suggest "Ѕ ѕ" for /dz/ and "Җ җ" for /ʑ/

That last one isn’t Slavic.

yeah but it's still Cyrillic the main reason why I chose is because: Ш ш /ʂ/ Щ щ /ɕ/ Ж ж /ʐ/ Җ җ /ʑ/

The symbol between P and C is not a Slavic letter, however it replaces the digraph “rz”.

You could use Р̌р̌ or Ҏҏ